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/*
* Copyright (c) <2002-2005> <Jean-Philippe Barrette-LaPierre>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (curlpp), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file
* WriteFunction option using functor as a callback.
*
*/
#include <cstdlib>
#include <cstring>
#include <curlpp/cURLpp.hpp>
#include <curlpp/Easy.hpp>
#include <curlpp/Options.hpp>
#include <curlpp/Exception.hpp>
#define MAX_FILE_LENGTH 20000
class WriterMemoryClass
{
public:
// Helper Class for reading result from remote host
WriterMemoryClass()
{
this->m_pBuffer = NULL;
this->m_pBuffer = (char*) malloc(MAX_FILE_LENGTH * sizeof(char));
this->m_Size = 0;
};
~WriterMemoryClass()
{
if (this->m_pBuffer)
free(this->m_pBuffer);
};
void* Realloc(void* ptr, size_t size)
{
if(ptr)
return realloc(ptr, size);
else
return malloc(size);
};
// Callback must be declared static, otherwise it won't link...
size_t WriteMemoryCallback(char* ptr, size_t size, size_t nmemb)
{
// Calculate the real size of the incoming buffer
size_t realsize = size * nmemb;
// (Re)Allocate memory for the buffer
m_pBuffer = (char*) Realloc(m_pBuffer, m_Size + realsize);
// Test if Buffer is initialized correctly & copy memory
if (m_pBuffer == NULL) {
realsize = 0;
}
memcpy(&(m_pBuffer[m_Size]), ptr, realsize);
m_Size += realsize;
// return the real size of the buffer...
return realsize;
};
void print()
{
std::cout << "Size: " << m_Size << std::endl;
std::cout << "Content: " << std::endl << m_pBuffer << std::endl;
}
// Public member vars
char* m_pBuffer;
size_t m_Size;
};
int main(int argc, char *argv[])
{
if(argc != 2)
{
std::cerr << "Example 06: Wrong number of arguments" << std::endl
<< "Example 06: Usage: example06 url"
<< std::endl;
return EXIT_FAILURE;
}
char *url = argv[1];
try
{
curlpp::Cleanup cleaner;
curlpp::Easy request;
WriterMemoryClass mWriterChunk;
// Set the writer callback to enable cURL
// to write result in a memory area
curlpp::types::WriteFunctionFunctor functor(&mWriterChunk,
&WriterMemoryClass::WriteMemoryCallback);
curlpp::options::WriteFunction *test = new curlpp::options::WriteFunction(functor);
request.setOpt(test);
// Setting the URL to retrive.
request.setOpt(new curlpp::options::Url(url));
request.setOpt(new curlpp::options::Verbose(true));
request.perform();
mWriterChunk.print();
}
catch ( curlpp::LogicError & e )
{
std::cout << e.what() << std::endl;
}
catch ( curlpp::RuntimeError & e )
{
std::cout << e.what() << std::endl;
}
}
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